Word Count : 170

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The divergence of a vector field \(\vec{F}\) in spherical coordinates \((r, \theta, \phi)\) is given by: \[ \nabla \cdot \vec{F} = \frac{1}{r^2} \frac{\partial}{\partial r} \left( r^2 F_r \right) + \frac{1}{r \sin\theta} \frac{\partial}{\partial \theta} \left( _____ ________ _________ _____ ___ ____ ______.
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